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SubjectRe: [PATCH 6/6] zsmalloc: make zsmalloc portable
On 04/26/2012 12:07 AM, Minchan Kim wrote:

>
> Quick patch - totally untested.
>
> We can implement new TLB flush function
> "local_flush_tlb_kernel_range" If architecture is very smart, it
> could flush only tlb entries related to vaddr. If architecture is
> smart, it could flush only tlb entries related to a CPU. If
> architecture is _NOT_ smart, it could flush all entries of all CPUs.
>
> Now there are few architectures have "local_flush_tlb_kernel_range".
> MIPS, sh, unicore32, arm, score and x86 by this patch. So I think
> it's good candidate other arch should implement. Until that, we can
> add stub for other architectures which calls only [global/local] TLB
> flush. We can expect maintainer could respond then they can
> implement best efficient method. If the maintainer doesn't have any
> interest, zsmalloc could be very slow in that arch and users will
> blame that architecture.
>
> Any thoughts?


I had this same idea a while back.

It is encouraging to know that someone else independently thought of
this solution too :) Makes me think it is a good solution.

Let me build and test on x86, make sure there are no unforseen consequences.

Thanks again for your work here!

Seth



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